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
Understand 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 need to find an equation that can be rearranged into this form with a slope of 87 and a y-intercept of 3.
Analyze option (A): Analyze option (A) 7x+8y=24. To put this equation into slope-intercept form, we need to solve for y. 8y=−7x+24y=(−87)x+3 This equation has a slope of −87 and a y-intercept of 3, which does not match the required slope of 87.
Analyze option (B): Analyze option (B) 7x−8y=−24. To put this equation into slope-intercept form, we need to solve for y. −8y=−7x−24y=87x+3 This equation has a slope of 87 and a y-intercept of 3, which matches the required slope and y-intercept.
Analyze option (C): Analyze option (C) 8x+7y=3. To put this equation into slope-intercept form, we need to solve for y. 7y=−8x+3y=(−78)x+73 This equation has a slope of −78 and a y-intercept of 73, which does not match the required slope of 87 nor the y-intercept of 3.
Analyze option (D): Analyze option (D) 7x−8y=3.To put this equation into slope-intercept form, we need to solve for y.−8y=−7x+3y=87x−83This equation has a slope of 87 but a y-intercept of −83, which does not match the required y-intercept of 3.
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