exam Maths Puzzle Numerical Ability

Answer TRUE or FALSE.

(a) The equation of the line through (0,0) which is perpendicular to y = x is y = -x

(b) The line 2x - y = -1 goes through the point (-2,-3)

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exam Other Question
What are the measures of two complementary angles if the difference of the measures of the angles is 12 Can someone help me with this problem?

I need to find the mode of this set of numbers:
9, 8, 10, 9, 9, 10, 8

thank you,
Sher