exam Maths Puzzle Numerical Ability

write an equation of the line.Express it in standard form.
through (8,3)and(-4,3)

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exam Other Question

Find the reference number for each value of t.

a. if t=2pi/3 _
the reference number is t =

b if t= 3pi/4 _
the reference number is t =

2. I am having problems with the following system of equations. The elimination method is supposed to be used, and the solution is to be in the form of integers or fractions.

.03x-0.2y=4
.04x+0.5y=63/19

Thanks!

Stephanie