Write the parametric equations of a line perpendicular to 4x + 8y +7 =0 with the same x-intercept as [𝑥,𝑦]=[2,7]+𝑡[−10,3].

1 answer

the line has slope -1/2
so a perpendicular line has slope 2
now find the x-intercept for the parametric line, and you have a point and a slope, so use the point-slope form for your new line.
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