Question

Find the y-intercept for the parabola defined by this equation: y = 2x²+x-1 Separate the values with a comma. Enter the correct answer. ​

Answer 1

0.5, -1

Explanation:

2x²+x-1=0

2x²+2x-x-1=0

2x(x+1)-1(x+1)=0

2x-1=0 or x+1=0

for 2x-1=0,

2x=1

x= 1/2 = 0.5

for x+1=0

x= -1

therefore, x= 0.5 or x= -1