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How in the heck do you do this

How in the heck do you do this-example-1

1 Answer

4 votes

Answer:

y=-¾x-3

Explanation:

first label the two points....

let's say the first point is A

and the second point is B

so you know that y=0 on the x-axis

and x=0 on the y axis

and the graph is kinda drawn to scale so you can definitely find the A & B coordinates

A coordinates is (-4,0)

B coordinates is (0,-3)

so as you can see ...this is a straight line

and the equation of the straight line is y=mx+c

since we have the coordinates of both points let's calculate the gradient

y2-y1%x2-x1

and you will get a gradient of -¾

now substitute one of the points into the equation to find c

I will use point A(-4,0)

0=-¾(-4)+c

0=3+c

(make c the subject of the formula)

c=-3

therefore the equation is y=-¾x-3

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