Constant of proportionality from tables (with equations)

Google Classroom

Problem

The quantities $x$x and $y$y are proportional.

$x$x	$y$y
$14$14	$1.4$1, point, 4
$16$16	$1.6$1, point, 6
$21$21	$2.1$2, point, 1

Find the constant of proportionality $(r)$left parenthesis, r, right parenthesis in the equation $y=rx$y, equals, r, x.

$r =$r, equals 

Hint #11 / 3

What times $x$x gives us $y$y?

Hint #22 / 3

If we multiply each $x$x-value by $\blueD{0.1}$start color #11accd, 0, point, 1, end color #11accd, we get to each corresponding $y$y-value:

$y=\blueD{0.1}x$y, equals, start color #11accd, 0, point, 1, end color #11accd, x

Hint #33 / 3

The constant of proportionality $(r)$left parenthesis, r, right parenthesis in the equation $y=rx$y, equals, r, x is $\blueD{0.1}$start color #11accd, 0, point, 1, end color #11accd.