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3 years ago

13

Which graphed line represents an equation of a line with a slope of -1 and a point on the line of (1, - 1)? A) red line

1 answer:

mamaluj [8]3 years ago

4 0

Answer:

y = -x

Step-by-step explanation:

slope = change in y/change in x

slope = -1

Find the y-intercept

x value difference between (0,0) and (1,-1) = 1

if change in x = 1 then change in y = -1 so y-intercept = -1 + 1 = 0

y = -x + 0

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Gabe has an outstanding balance on four different credit cards. Which method of paying off his credit card debt will save him mo

Ivanshal [37]

Is this multiple choice?

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4 years ago

Simplify this 13.) 13y² + 9y + 4y² - 31y

erastova [34]

Answer: $17y^2-22y$

Step-by-step explanation:

$13y^2+9y+4y^2-31y$

$\mathrm{Group\:like\:terms}$

$=13y^2+4y^2+9y-31y$

$\mathrm{Add\:similar\:elements:}\:13y^2+4y^2=17y^2$

$=17y^2+9y-31y$

$\mathrm{Add\:similar\:elements:}\:9y-31y=-22y$

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3 years ago

If 32% of a number is 64, what is the number?

Verdich [7]

Hey!

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Steps To Solve:

~Turn into decimal

32% = 0.32

~Divide

64 / 0.32 = 200

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Hence, the answer is $\Large\boxed{\mathsf{200}}$

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7 0

3 years ago

Read 2 more answers

Simplify the following expression. 2^2 • 2^3

sesenic [268]

Answer:

4 × 6

Step-by-step explanation:

2^2= 4 or 2 × 2= 4

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So, 4 × 6

8 0

3 years ago

35 solve the following syste

blondinia [14]

Part A: The solution is $(-0.923,5.692)$

Part B: The point $(3,7)$ is not in the solution set.

Explanation:

Part A: The given inequalities are $3 x+4 y>20$ and $x$

The solution can be determined by solving the two inequalities by substitution method.

Changing inequalities to equality, we have,

$x=3 y-18$ and $3 x+4 y=20$

Let us substitute $x=3 y-18$ in the equation $3 x+4 y=20$ , we get,

$3 (3y-18)+4 y=20$

$9y-54+4y=20$

$13y=74$

$y=5.692$

Substituting $y=5.692$ in $x=3 y-18$ , we get,

$x=3 (5.692)-18$

$=17.076-18$

$x=-0.923$

Thus, the solution set is $(-0.923,5.692)$

Part B: Now, we shall determine whether the point $(3,7)$ is in the solution set.

Let us substitute the point $(3,7)$ in the inequalities $3 x+4 y>20$ and $x$ , we get,

$3 (3)+4 (7)>20$

$9+28>20$

$37>20$

Also, substituting $(3,7)$ in $x$ , we get,

$3$

$3$

$3$

Since, the point $(3,7)$ does not satisfy one of the inequality $x$ , the solution set does not contain the point $(3,7)$

Thus, the point $(3,7)$ is not in the solution set.

8 0

3 years ago