exam Maths Puzzle Numerical Ability

(-3,0)(0,3) find the slope of this line

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exam Other Question

what are the values of w,x,y, and z in these equations?

1. w + x + y + z = 2
2. 2w - x - y +2z = 7
3. 2w + 3x + 2y - 2z = -2
4. 3w - 2x - y -3z = -2 I am trying to factor -x^2-14x-13. please help me i am lost