<prompt> Translate the following text to SwahiliFigure 6 shows the curves for a situation where the discount and cross elasticities are zero, Figure 7 for when the discount elasticities are doubled, and Figure 8 for when the discount elasticities are doubled and the two no-shift elasticities are equal to -0.  <response>: Picha ya 6 inaonyesha curves kwa hali ambapo discount na msalaba elasticities ni sifuri, Picha ya 7 kwa wakati discount elasticities ni mara mbili, na Picha ya 8 kwa wakati discount elasticities ni mara mbili na mbili no-shift elasticities ni sawa na -0. 