A scientist is working with two different concentrations of hydrochloric acid (HCl). One bottle is 80%, and the other is 30% HCl. For their experiment they need 1 liter of 60% HCl. How many liters of the 80% solution do they need? How many liters of the 30% solution?

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is

my dear correct answer is option number 3