exam Maths Puzzle Numerical Ability

I need some help with this. I don't know where to begin...

Graph the following equations; calculate the slope, x-intercept, and y-intercept, and label the intercepts on the gra

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exam Other Question

Find an equation for the line with y-intercept 3 that is perpendicular to the line y=2/3x-4. My answer is 2y=6-3x could this be right. Thanks for checking. Solve for x and y

6x-3y=9

5x+2y=-15