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erastovalidia [21]
3 years ago
7

a straight line has a equation 4x + 3y = 12 . find the gradient of the line and the coordinates of the point where this line cro

sses the x-axis
Mathematics
1 answer:
Komok [63]3 years ago
4 0
4x + 3y = 12
3y = -4x + 12
y = -4/3x + 4........so the slope (or gradient) is -4/3...because in y = mx + b form, the slope(gradient) is in the m position and the y int is in the b position....so if u wanted to know the y axis, it would be (0,4)

the x intercept (where the line crosses the x axis) can be found by subbing in 0 for y in the original equation or the slope intercept equation, and solving for x.
4x + 3(0) = 12
4x = 12
x = 12/4 = 3....so the x intercept is (3,0)
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50% is 30, it’s half of 60. 25% is the same as dividing by 4, 60/4 is 15.
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2 years ago
Give the discriminant of the equation 0 = −x2+6x−9<br>please answer
Brut [27]

Answer:

x = 3

Steps:

- ( {x}^{2}  - 6x + 9) = 0

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{(x - 3)}^{2}  = 0

x - 3 = 0

There you go!

8 0
3 years ago
Simplify the following expressions and remember to pay attention to the signs plz help me
ioda

2 negatives can be converted to a plus sign. -(-x) can be +x or just x.

-54--23

-54+23

<u>23-54=-31</u>

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<u>78+4=82</u>

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Now let's pause fer a sec. When a negative is being divided by another negative, the quotient(answer to division problem) becomes a positive.

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<u></u>

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---

hope it helps

7 0
2 years ago
Read 2 more answers
Which of the following is a linear equation?
Sedbober [7]

2x - 3y = 7 can be rewritten as y = 2/3x - 7/3, therefore, the equation that is a linear equation is: C. 2x - 3y = 7.

<h3>What is a Linear Equation?</h3>

A linear equation is expressed in the slope-intercept form as y = mx + b.

2x - 3y = 7, rewritten in slope-intercept form would be:

-3y = -2x + 7

y = -2x/-3 + 7/-3

y = 2/3x - 7/3

m = 2/3 and b = -7/3

Therefore, the equation that is a linear equation is: C. 2x - 3y = 7.

Learn more about linear equation on:

brainly.com/question/15602982

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4 0
1 year ago
Need answer ASAP!<br><br> 1 + 1 =
OlgaM077 [116]

Answer:

2

Step-by-step explanation:

I hope this helps!

4 0
2 years ago
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