Consider this function. f(x) = 2x - 2 which graph represents the inverse of function f?
john multiplied the second equation by 4.
we are given two linear equations and we know that john multiplied the first equation by -3 and the second equation by another number to eliminate the x-terms.
we are to find that another number.
multiplying the first equation by -3 we get:
-12x + 18y = -6 (3)
since we have to eliminate the x terms so coefficients of x must be the same with opposite signs. so we need 12x in the second equation to eliminate it.
for this, we need to multiply the second equation by 4 to get:
12x + 20y = 44
because abcd is an isosceles trapezoid, the angles a and d are congruent.
ba and cd are congruent (given) and ad is congruent to itself (reflexive property).
then triangles bad and cda form a pair of sas triangles, so they are congruent.
bd and ca are corresponding parts in those triangles, so they are congruent (cpctc).