Severity: Warning

Message: count(): Parameter must be an array or an object that implements Countable

Filename: controllers/calculator.php

Line Number: 37

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Solution steps:

Given that (x1, y1) = (5, 7)

Slope m = 4

Substitute the given point (x1, y1) and slope in the point slope equation formula.

(y-y1) = m(x-x1).

(y-7) = 4(x-5)

y-7 = 4(x) -4(5)

y-7=4x-20

Add 7 on both sides

y-7+7=4x-20+7

y=4x-13

Answer is y=4x-13.

Solution steps:

Given that x1=0 and y1=-2

Slope m= 3

Substitute the given point (x1, y1) and slope in the point slope equation formula.

(y-y1) = m(x-x1).

y-(-2) =3(x-0)

y+2 =3(x)

Subtract 2 on both sides

y+2-2=3x-2

y=3x-2

Answer is y=3x-2.