Which value, when placed in the box, would result in a system of equations with infinitely many solutions? y = 2x – 5 2y – 4x = –10 –5 5 10

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

john got lost so he didn't know what to do and it was crazy because he didn't except it

step-by-step explanation:

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