Answer to Question #154988 in Algebra for maria h

Question

Nolan plots the y-intercept of a line at (0,3) on the y-axis. He uses a slope of 2 to graph another point. He draws a line through the two points. Which equation represents Nolan’s line?

A. y= 2x+1

B. y=2x+3

C. y=3x+2

D.y=3x+5

Answer 1

We know the point through which the straight line passes, therefore we need to substitute the corresponding value of x=0 into the equations: A y=1; B y=3,C y=2,D y=5. Therefore

 $y=3, x=0, \,if \,y=2x+3,\\ \,because \, 3=2×0+3, 3=3.$

Hence the answer is B y=2x+3.