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3 years ago

HELP! 15 Points!!! Solve the following system of equations by graphing. x - y = 7, x - y = 5 What is the solution?

1 answer:

6 0

If you graphed those equations after putting them into slope-intercept form, you would see that the slope of both the lines is 1. Identical slopes tell us that the lines are parallel and that they will NEVER IN A BILLION TRILLION YEARS ever cross. Therefore, there is no solution. Second choice down.

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What is the equation of the line that passes through the point (4, 3) and is perpendicular to the line x + y = 4?

zimovet [89]

ANSWER

$y - x = - 1$

EXPLANATION

The required equation passes through:

(4,3) and is perpendicular to x+y=4.

Rewrite the given equation in slope-intercept form:

$y = - x + 4$

The slope of this line is -1.

The slope of the required line is perpendicular to this line, so we find the negative reciprocal of this slope.

$m= - \frac{1}{ - 1} = 1$

The equation of the line can be found using:

$y - y_1 = m(x - x_1)$

We substitute the slope and point to obtain:

$y - 3 = 1(x - 4)$

We simplify to get:

$y - 3 = x - 4$

$y - x = - 4 + 3$

The required equation is

$y - x = - 1$

5 0

3 years ago

Find to the nearest degree, the measure of the smaller acute angle of a right triangle whose sides are 7, 24,

Semmy [17]

The smallest angle would be 16.26°, with the other angles being 90° & 73.74°

7 0

3 years ago

I need to have twenty characters here

mestny [16]

Try explaining how you worked the problem and how you did it

6 0

3 years ago

Write 3^-4 as a fraction

Ad libitum [116K]

Answer: 1/3^4 or 1 over 3 fourths beacuse you need to just flip it to get the exponent to be positive. 3^-4 is basically 3^-4 over 1.

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Please help explanation if possible

Nookie1986 [14]

Answer:

y=-3x+5

Step-by-step explanation:

concepts: y=mx+b is slope intercept equation formula

m=slope

b= y intercept

Therefore we need to find the slope and y intercept

first find slope

m= $\frac{y2-y1}{x2-x1}$

let y2 be 2

let y1 be -4

let x2 be 1

let x1 be 3

$\frac{2-(--4)}{1-3}$

6/-2 = -3

m=-3

slope is -3

y= -3x+ b

we need find y intercept now

just plug in (1,2) into that equation

2=-3(1)+b

b=5

y=-3x+5

5 0

3 years ago