Find the y intercept. Please solve and add step by step.
y=x²+4x+3
x -2 -1 0 1 2
y_ _ _ _ _
Share
Find the y intercept. Please solve and add step by step.
y=x²+4x+3
x -2 -1 0 1 2
y_ _ _ _ _
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Verified answer
Answer:
y = x² + 4x + 3
Table of values:
Substitute all given terms.
y = (-2)² + 4(-2) + 3
y = (-1)² + 4(-1) + 3
y = (0)² + 4(0) + 3
y = (1)² + 4(1) + 3
y = (2)² + 4(2) + 3
Evaluate the powers.
y = 4 + 4(-2) + 3
y = 1 + 4(-1) + 3
y = 0 + 4(0) + 3
y = 1 + 4(1) + 3
y = 4 + 4(2) + 3
Multiply.
y = 4 - 8 + 3
y = 1 - 4 + 3
y = 0 + 0 + 3
y = 1 + 4 + 3
y = 4 + 8 + 3
Add and subtract.
y = -1, if x = -2
y = 0, if x = -1
y = 3, if x = 0
y = 8, if x = 1
y = 15, if x = 2
y-intercept:
y = x² + 4x + 3
Substitute x as 0.
y = (0)² + 4(0) + 3
Evaluate the power.
y = 0 + 4(0) + 3
Multiply.
y = 0 + 0 + 3
Add.
y = 3