Answer:
The Standard Form of the Equation is A. 2x - 5y = -15
Step-by-step explanation:
Given points: (-5, -1) and (10, -7).
Find the slope:
m = (y - y1)/(x - x1)
= -1 - (-7)/-5 - 10
= -1 + 7/-15
= 6/-15
m = -2/5
You already had the point slope form:
y - y1 = m(x - x1)
y - (-7) = -2/5(x - 10)
y + 7 = -2/5(x - 10)
The rest of the question is looking for the standard form of the equation:
Ax + By = C
Begin by solving the point slope form for y:
y + 7 = -2/5x + 20/5
y + 7 = -2/5x + 4
y = -2/5x - 3
Now, put the equation into the standard form:
y + 2/5x = -3
Multiply by 5, and place x first:
2x + 5y = -15, the Standard form of the Equation
Prove by setting x = 0 and finding the y intercept:
5y + 2(0) = -15
5y = -15
y = -3, giving the y intercept, when x = 0 as -3 or (0, -3)
Hope this helps!! Have an Awesome Day!! :-)
