1. If (x<span>, </span>y<span>) is reflected in the </span>x-axis, its image is the point (x, -y<span>). The </span>y<span>-coordinate is negated when reflecting in the </span>x-axis. The rule is (x<span>, </span>y) → (x, -y). 2. If (x<span>, </span>y<span>) is reflected in the </span>y-axis, its image is the point (-x<span>, </span>y<span>). The </span>x<span>-coordinate is negated when reflecting in the </span>y-axis. The rule is (x<span>, </span>y) → (-x<span>, </span>y). 3. If (x<span>, </span>y<span>) is reflected in the line </span>y<span> = </span>x, its image is (y<span>, </span>x<span>). The line </span>y<span> = </span>x<span> is a line with a slope of 1 and a </span>y<span>-intercept of 0. The </span>x<span>-coordinate and the </span>y<span>-coordinate are switched when reflecting in the line </span>y<span> = </span>x. The rule is (x<span>, </span>y) → (y<span>, </span>x<span>).</span>
All you need to do is find (f+g)x = (12x) + (10(1.2)X) which = 24x then in the multiple choice, see which one equals 24x, in this case its C. 5*1.2=6, 6x+6x = 12x*2 = 24x
