exam Maths Puzzle Numerical Ability

I have no idea how to do this. Please help.

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

4.2x + 3.8y = 1.9

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exam Other Question

Please help me I am having problems with these kinds of problems.
sqrt 7{{{2 sqrt 3 + 3 sqrt 7)}}} Is the given number a solution of the equation?

9k = 10 - k; -1

-7r - 15 = -2r; -3

-3p = 4p + 35; -5

8 -e = 2e - 16; 8

5 - 15s = 8 - 16s; 3

2(x - 2) - 5x = 5(2 - x); 7

6a + 3 = 3(3a - 2); 4