Question

Number 13 explain......

Answer 1

The slope is 2 and the equation of the line is y = mx+b with m =2

Then the equation becomes: y = 2x+b. How to calculate b?
Since this line passes through the point (-3 , 4), we replace x with -3 and y=4

4= 2.(-3) + b 
4 = - 6 + b
and b= 10. The final equation is : y = 2x + 10 (answer a)