The formula m= V2 - V1
X2 - X1
The product of these slopes is
This product
shows that the slopes are negative reciprocals. It is given
that the lines are perpendicular and we have shown that
the slopes of the lines are negative reciprocals.

Answer is (d-b/c-a)(c-a/-d+b)=1

Reflect the point (7,0) across the y-axis

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?