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Coordinate Proofs Quick Check

Mallory is designing a background print for a logo. She starts the design on a coordinate plane and creates parallel lines diagonally. The first line that she makes he
slope of and crosses through the origin. If she wants the next line to cross the y-axis at 2, what would be the equation of the next parallel line? (1 point)
y=-2+2
y=3z +2
y=2+2
y=-3x+2

User FrIT
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1 Answer

4 votes

Final answer:

Assuming the slope from the available options is -3, the equation of the line would be y = -3x + 2.

Step-by-step explanation:

The question involves finding the equation of a line parallel to another line that crosses the y-axis at a specific point on a coordinate plane. The first line Mallory creates has an unspecified slope that goes through the origin (0,0). We can represent this line's equation in slope-intercept form as y = mx, where m is the slope. Since Mallory wants her next line to be parallel to the first and to cross the y-axis at 2, the slope of the new line will be the same as the first line, and the y-intercept will be 2. Because we do not have the actual slope of the first line, we can assume it is m (since parallel lines have the same slope), and the equation for the new line will be y = mx + 2.

Based on the given options, we can only choose the correct equation if we assume the slope to be -3 because none of the given options contains a variable for the slope. The correct equation from the choices provided that has a slope of -3 and a y-intercept of 2 is y = -3x + 2.

User Henridv
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7.7k points