The equations are graphed in the xy-plane. Which equation's graph will have a slope of 87 and a y intercept of 3 ?Choose 1 answer:(A) 7x+8y=24(B) 7x−8y=−24(C) 8x+7y=3(D) 7x−8y=3
Q. The equations are graphed in the xy-plane. Which equation's graph will have a slope of 87 and a y intercept of 3 ?Choose 1 answer:(A) 7x+8y=24(B) 7x−8y=−24(C) 8x+7y=3(D) 7x−8y=3
Understanding slope-intercept form: Understand the slope-intercept form of a linear equation. The slope-intercept form of a linear equation is y=mx+b, where m is the slope and b is the y-intercept. We are looking for an equation with a slope of 87 and a y-intercept of 3.
Converting equation (A) to slope-intercept form: Convert the given equations to slope-intercept form to identify the slope and y-intercept.We will start with option (A) 7x+8y=24 and rearrange it to solve for y.Subtract 7x from both sides to get 8y=−7x+24.Then divide by 8 to isolate y, yielding y=(−87)x+3.
Checking slope and y-intercept for equation (A): Check if the slope and y-intercept from Step 2 match the required values.The slope from equation (A) is −87, and the y-intercept is 3. The slope does not match the required slope of 87, so option (A) is not the correct answer.
Converting equation (B) to slope-intercept form: Repeat Step 2 for option (B) 7x−8y=−24. Subtract 7x from both sides to get −8y=−7x−24. Then divide by −8 to isolate y, yielding y=87x+3.
Checking slope and y-intercept for equation (B): Check if the slope and y-intercept from Step 4 match the required values.The slope from equation (B) is 87, and the y-intercept is 3. Both the slope and y-intercept match the required values, so option (B) is the correct answer.