Respuesta :
Answer:
The answer to your question is letter D.
Step-by-step explanation:
Slope = m = 2
Points A (-2, -7) B ( 5, 7)
1.- Check the slope
m = [tex]\frac{y2 - y1}{x2 - x1}[/tex]
[tex]m = \frac{7 + 7}{5 + 2}[/tex]
[tex]m = \frac{14}{7}[/tex]
m = 2
Then, the slope is correct
2.- Find the equation of the line
y - y1 = m (x - x1)
y + 7 = 2(x + 2)
y + 7 = 2x + 4
y = 2x + 4 - 7
y = 2x - 3
y=ax+b
(-2; -7); x=-2; y=-7
-7=-2a+b=> b=2a-7
(5; 7); x=5; y=7
7=5a+b
7=5a+2a-7 ; 7a=14=> a=2
b=2•2-7; b= -3
=> y=2x-3 D.